Outstanding cold weather protection; the Regatta Men\'s Volter Loft II is an ultra-cosy padded jacket with heat technology. Connect a portable battery pack (sold separately), and enjoy instant heat from the heat technology within the jacket. During assembly, the back of each jacket is lined with an electronically powered copper heating zone, powered by your own battery pack which sits within an inside pocket. The heat is toggled on and off via a small temperature control inside the jacket, of which there\'s up to three different heating settings to choose from. This combined with the Warmloft insulation will fend off winter winds and cold conditions on the side-line, around town or on the hill. *Battery pack is sold separately. Any standard portable powerbank or charger with USB will connect.Warmloft insulation - padded insulation delivers outstanding core warmthActive battery powered heating system with thermostat connects to an external portable powerbank (sold separately) to provide instant heatTwo hours\' worth of continuous heatingGrown-on hoodWater-repellent outer fabric sheds light rain and snowInternal phone-charging pockets - separate compartments for charger and phoneFabric: 100% PolyamideHeated TechnologyActive battery-powered heating system (battery pack sold separately)2 heated lower pocket panels and 1 heated back panelEasy on/off button3 temperature settingsSafety cut offPlease note: You should not use a heated jacket if you suffer from a serious illness or chronic health condition such as heart disease, anaemia, low blood pressure, paralysis, hypertension, diabetes or any other condition that causes poor circulation.